@ttk/component/es/drag/index.js

ttk组件库

import { _ as _defineProperty } from '../defineProperty-847730aa.js';
import { _ as _inherits, a as _getPrototypeOf, b as _possibleConstructorReturn, c as _classCallCheck, d as _createClass } from '../getPrototypeOf-b95655c5.js';
import React__default, { PureComponent } from 'react';
import PropTypes from 'prop-types';
import '../_commonjsHelpers-471920d6.js';

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) { symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); } keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

var DragComponent = /*#__PURE__*/function (_PureComponent) {
  _inherits(DragComponent, _PureComponent);

  var _super = _createSuper(DragComponent);

  function DragComponent() {
    var _this;

    _classCallCheck(this, DragComponent);

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _super.call.apply(_super, [this].concat(args));
    _this.position = {
      startX: 0,
      startY: 0,
      dx: 0,
      dy: 0,
      tx: 0,
      ty: 0
    };

    _this.start = function (event) {
      if (event.button != 0) {
        //只允许左键，右键问题在于不选择conextmenu就不会触发mouseup事件
        return;
      }

      document.addEventListener("mousemove", _this.docMove);
      _this.position.startX = event.pageX - _this.position.dx;
      _this.position.startY = event.pageY - _this.position.dy;
    };

    _this.docMove = function (event) {
      var tx = event.pageX - _this.position.startX;
      var ty = event.pageY - _this.position.startY;
      var transformStr = "translate(".concat(tx, "px,").concat(ty, "px)");

      _this.props.updateTransform(transformStr, tx, ty, _this.tdom);

      _this.position.dx = tx;
      _this.position.dy = ty;
    };

    _this.docMouseUp = function (event) {
      document.removeEventListener("mousemove", _this.docMove);
    };

    return _this;
  }

  _createClass(DragComponent, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      this.tdom.addEventListener("mousedown", this.start); //用document移除对mousemove事件的监听

      document.addEventListener("mouseup", this.docMouseUp);
    }
  }, {
    key: "componentWillUnmount",
    value: function componentWillUnmount() {
      this.tdom.removeEventListener("mousedown", this.start);
      document.removeEventListener("mouseup", this.docMouseUp);
      document.removeEventListener("mousemove", this.docMove);
    }
  }, {
    key: "render",
    value: function render() {
      var _this2 = this;

      var children = this.props.children;

      var newStyle = _objectSpread(_objectSpread({}, children.props.style), {}, {
        cursor: "move",
        userSelect: "none"
      });

      return /*#__PURE__*/React__default.cloneElement(React__default.Children.only(children), {
        ref: function ref(tdom) {
          return _this2.tdom = tdom;
        },
        style: newStyle
      });
    }
  }]);

  return DragComponent;
}(PureComponent);

DragComponent.propTypes = {
  children: PropTypes.element.isRequired
};
DragComponent.defaultProps = {
  //默认是移动children dom,覆盖该方法，可以把tranform行为同步给外部
  updateTransform: function updateTransform(transformStr, tx, ty, tdom) {
    tdom.style.transform = transformStr;
  }
};

export { DragComponent as default };